quincey

ok i wanted to post this ,i did not see anything about the auto trans so im asking if anyone might know what this is ,,,,ok my 89 conv. non turbo 13-b with 95,000 miles on it ,when it gits warmed up the trans seems to have a stall in in during its shifting mode ,ive tryed it from a stop and shifted it manualy and it dose the same but if i back of the gas it shifts fine could this be a senser?? or something worse ??? it only dose this when it warmed up..its not sliping tho becouse i can punch it and it drops down like it suposed to ....anyone know about this ????
thanks